Using state lists for colors

1 files changed, 68 insertions, 0 deletions

diff --git a/app/src/main/java/de/danoeh/antennapod/view/RecursiveRadioGroup.java b/app/src/main/java/de/danoeh/antennapod/view/RecursiveRadioGroup.java
new file mode 100644
index 000000000..162f524bf
--- /dev/null
+++ b/app/src/main/java/de/danoeh/antennapod/view/RecursiveRadioGroup.java
@@ -0,0 +1,68 @@
+package de.danoeh.antennapod.view;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.ActionMode;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.LinearLayout;
+import android.widget.RadioButton;
+import java.util.ArrayList;
+
+/**
+ * An alternative to {@link android.widget.RadioGroup} that allows to nest children.
+ * Basend on https://stackoverflow.com/a/14309274.
+ */
+public class RecursiveRadioGroup extends LinearLayout {
+    private final ArrayList<RadioButton> radioButtons = new ArrayList<>();
+    private RadioButton checkedButton = null;
+
+    public RecursiveRadioGroup(Context context) {
+        super(context);
+    }
+
+    public RecursiveRadioGroup(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public RecursiveRadioGroup(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    @Override
+    public void addView(View child, int index, ViewGroup.LayoutParams params) {
+        super.addView(child, index, params);
+        parseChild(child);
+    }
+
+    public void parseChild(final View child) {
+        if (child instanceof RadioButton) {
+            RadioButton button = (RadioButton) child;
+            radioButtons.add(button);
+            button.setOnCheckedChangeListener((buttonView, isChecked) -> {
+                if (!isChecked) {
+                    return;
+                }
+                checkedButton = (RadioButton) buttonView;
+
+                for (RadioButton view : radioButtons) {
+                    if (view != buttonView) {
+                        view.setChecked(false);
+                    }
+                }
+            });
+        } else if (child instanceof ViewGroup) {
+            parseChildren((ViewGroup) child);
+        }
+    }
+
+    public void parseChildren(final ViewGroup child) {
+        for (int i = 0; i < child.getChildCount(); i++) {
+            parseChild(child.getChildAt(i));
+        }
+    }
+
+    public RadioButton getCheckedButton() {
+        return checkedButton;
+    }
+}